/**
 * Created by ASUS on 2017/9/13.
 */
/*
 柯乐义
 http://keleyi.com
 */

jQuery.getPos = function (e) {
	var l = 0;
	var t = 0;
	var w = jQuery.intval(jQuery.css(e, 'width'));
	var h = jQuery.intval(jQuery.css(e, 'height'));
	var wb = e.offsetWidth;
	var hb = e.offsetHeight;
	while (e.offsetParent) {
		l += e.offsetLeft + (e.currentStyle ? jQuery.intval(e.currentStyle.borderLeftWidth) : 0);
		t += e.offsetTop + (e.currentStyle ? jQuery.intval(e.currentStyle.borderTopWidth) : 0);
		e = e.offsetParent;
	}
	l += e.offsetLeft + (e.currentStyle ? jQuery.intval(e.currentStyle.borderLeftWidth) : 0);
	t += e.offsetTop + (e.currentStyle ? jQuery.intval(e.currentStyle.borderTopWidth) : 0);
	return { x: l, y: t, w: w, h: h, wb: wb, hb: hb };
};
jQuery.getClient = function (e) {
	if (e) {
		w = e.clientWidth;
		h = e.clientHeight;
	} else {
		w = (window.innerWidth) ? window.innerWidth : (document.documentElement && document.documentElement.clientWidth) ? document.documentElement.clientWidth : document.body.offsetWidth;
		h = (window.innerHeight) ? window.innerHeight : (document.documentElement && document.documentElement.clientHeight) ? document.documentElement.clientHeight : document.body.offsetHeight;
	}
	return { w: w, h: h };
};
jQuery.getScroll = function (e) {
	if (e) {
		t = e.scrollTop;
		l = e.scrollLeft;
		w = e.scrollWidth;
		h = e.scrollHeight;
	} else {
		if (document.documentElement && document.documentElement.scrollTop) {
			t = document.documentElement.scrollTop;
			l = document.documentElement.scrollLeft;
			w = document.documentElement.scrollWidth;
			h = document.documentElement.scrollHeight;
		} else if (document.body) {
			t = document.body.scrollTop;
			l = document.body.scrollLeft;
			w = document.body.scrollWidth;
			h = document.body.scrollHeight;
		}
	}
	return { t: t, l: l, w: w, h: h };
};

jQuery.intval = function (v) {
	v = parseInt(v);
	return isNaN(v) ? 0 : v;
};

jQuery.fn.HoverTreeScroll = function (s) {
	o = jQuery.speed(s);
	return this.each(function () {
		new jQuery.fx.HoverTreeScroll(this, o);
	});
};

jQuery.fx.HoverTreeScroll = function (e, o) {
	var z = this;
	z.o = o;
	z.e = e;
	z.p = jQuery.getPos(e);
	z.s = jQuery.getScroll();
	z.clear = function () { clearInterval(z.timer); z.timer = null };
	z.t = (new Date).getTime();
	z.step = function () {
		var t = (new Date).getTime();
		var p = (t - z.t) / z.o.duration;
		if (t >= z.o.duration + z.t) {
			z.clear();
			setTimeout(function () { z.scroll(z.p.y, z.p.x) }, 13);
		} else {
			st = ((-Math.cos(p * Math.PI) / 2) + 0.5) * (z.p.y - z.s.t) + z.s.t;
			sl = ((-Math.cos(p * Math.PI) / 2) + 0.5) * (z.p.x - z.s.l) + z.s.l;
			z.scroll(st, sl);
		}
	};
	z.scroll = function (t, l) { window.scrollTo(l, t) };
	z.timer = setInterval(function () { z.step(); }, 13);
};

/*
 http://hovertree.com
 */